package com.ruoyi.framework.config;

import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.utils.StringUtils;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 资源文件配置加载
 *
 * @author ruoyi
 */
@Configuration
public class I18nConfig implements WebMvcConfigurer {
    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver slr = new SessionLocaleResolver();
        // 默认语言
        slr.setDefaultLocale(Constants.DEFAULT_LOCALE);
        return slr;
    }

    @Bean
    public LocaleChangeInterceptor localeChangeInterceptor() {
        LocaleChangeInterceptor lci = new LocaleChangeInterceptor() {
            @Override
            public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws ServletException {
                //过滤css, js, png, jpg, jpeg, woff
                String uri = request.getRequestURI();
                if (StringUtils.containsAny(uri, "css", "js", "png", "jpg", "jpeg", "woff", "properties")) {
                    return true;
                }
                return super.preHandle(request, response, handler);
            }
        };
        // 参数名
        lci.setParamName("lang");
        return lci;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(localeChangeInterceptor());
    }
}